Revert "use latest snapshot as the compiler to bootstrap with"
Revert "use latest snapshot as the compiler to bootstrap with"

This reverts commit 96c563a39282a914dd75988d48294c0866eb73d5.

mirah/mirah,felixvf/mirah,uujava/mirah,mirah/mirah,uujava/mirah,mirah/mirah,uujava/mirah,felixvf/mirah,mirah/mirah,uujava/mirah,felixvf/mirah,uujava/mirah,felixvf/mirah